6787161 has 18 divisors (see below), whose sum is σ = 10351770. Its totient is φ = 4284576.

The previous prime is 6787147. The next prime is 6787211. The reversal of 6787161 is 1617876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 207936 = 2565^2 + 456^2 .

It is not a de Polignac number, because 6787161 - 2⁹ = 6786649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6787141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2205 + ... + 4293.

Almost surely, 2^6787161 is an apocalyptic number.

It is an amenable number.

6787161 is a deficient number, since it is larger than the sum of its proper divisors (3564609).

6787161 is a wasteful number, since it uses less digits than its factorization.

6787161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133 (or 2111 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 6787161 is about 2605.2180331020. The cubic root of 6787161 is about 189.3343372486.

The spelling of 6787161 in words is "six million, seven hundred eighty-seven thousand, one hundred sixty-one".